Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada

Genus Neohermes

Neohermes angusticollis - male Western Dobsonfly? (Corydalus cognata) - Neohermes californicus Neohermes Neohermes angusticollis, I believe. - Neohermes - female Neohermes concolor - male Neohermes concolor ??? - Neohermes Fishfly?  - Neohermes fishfly - Neohermes - male
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Megaloptera (Alderflies, Dobsonflies, and Fishflies)
Family Corydalidae (Dobsonflies and Fishflies)
Subfamily Chauliodinae (Fishflies)
Genus Neohermes
Synonyms and other taxonomic changes
formerly treated as part of Chauliodes
Explanation of Names
Neohermes Banks 1908
Neohermes = 'new' + Hermes (a related Old World genus)
Numbers
5 spp., all in our area(1)(2)
Size
head to wing tips 35-55 mm, body 25-35 mm, wingspan 85-105 mm
Identification
Body and wings dark, wings mottled gray. Antennae moniliform (pectinate or serrate in Chauliodes), in males with ring of erect hairs on each segment

hind wing venation different from Chauliodes(3)
key to eastern spp. in(2) (adult males)
Range
nearctic genus (3 spp. in e. US + 2 spp. in w. US)(1)
Habitat
appear to prefer streams (Chauliodes prefer still water)
Season
N. concolor in OK: Jun-Aug; N. angusticollis Piedmont in NC: Jun(4); N. californicus in n. CA: May(5)
Life Cycle
Larvae in leaf litter at bottom of small streams. N. californicus is known to wait out dry seasons buried in mud as first instar larva.
Remarks
N. concolor is the only widespread species in the East. N. angusticollis is known from SC and GA, N. matheri only from MS.(2)

A new species, N. inexpectatus was recently (2016) described from California: https://doi.org/10.1371/journal.pone.0148319
Works Cited
1.Species catalog of the Neuroptera, Megaloptera, and Raphidioptera of America North of Mexico
Penny N.D., Adams P.A., Stange L.A. 1997. Proc. Calif. Acad. Sci. 50: 39-114.
2.Variation in the terminalia of Neohermes concolor with a key to males of Neohermes in eastern North America
Bowles D.E., Mathis M.A. 1992. Insecta Mundi 6: 145-149.
3.American Insects: A Handbook of the Insects of America North of Mexico
Ross H. Arnett. 2000. CRC Press.
4.Insects of North Carolina
C.S. Brimley. 1938. North Carolina Department of Agriculture.
5.California Insects
Jerry A. Powell, Charles L. Hogue. 1989. University of California Press.